Burglar-alarm



S. HAMILTON, 1r.

'- TiH Alarm.

No. 13,874.' Patented Dec. 4,1855.

NA PETERS. Pmlwlichognphw, wmngmn, n c.

UNITE SAML. HAMILTON, JR., OF TOLLAND, MASSACHUSETTS.

BURGLAR-ALARIVI.

To all 'whom it may concern:

Be it known that I, SAMUEL HAMILTON, J r., of Tolland, in the county of Hampden and State of. Massachusetts, have invented and made certain new and useful Improvements in Burglar-Alarm Safety-Drawers; and I do hereby declare that the following is a clear, full, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective view of the drawer fra-ming, or casing a, c, a, a, a, a, the drawer pait (LX, the actuating pull rod I), o, the ratch check disk 19X, the spring catch c, the slot catch or check ci, the center socket rail (Z, CZ, d, the dividing` rail e, e, the secret chamber f, f, the clock work devices g, g, the hammer or striker 7L, h, the spring z', the alarm tympanum J, the fixed stop block K, KX, the wedge check L, the pressure spring m, m, the actuating links n, a, the side spring catch or let oft 0 0 o, the fastening screws P, P, the set, or wind up key g. The dotted lines indicate the sound vent; 71:, the slide opening. s, s, s, s, is the partition formed with slide grooves similar to an ordinary drawer; SX, slide check block; t, u, check catches; 0, o, e,

clockwork; w, the spring; m, the stop rod; y, the stop; e, e, e, the striker or hammer to the side alarm; &, Sz, &, the bell or alarm.

Fig. 2 shows `perspective view of the drawer with the front detached; a, a, a, a, sides of drawer; 1", the sound vent; TX, slide opening; 3X, the slide check block; s, s, s, s, partition with slide grooves or ways for the drawers; t, secret springs; X, X, secret holdfast attached to the springs@1 Fig. 3 shows the actuating pull rod b, b, with the pull knob 5*; c, c, the spring catch; ci, slot catch; X, tenori to the mortised block; LX, the hammer stop or check point.

Fig. 4, shows ratch or check disk 5X, 5X, formed with a slotted tube 0*.

Fig. 5, shows side division rail to case of drawer, 0, o, o being the side spring catch. s, s, s, s is the partition with ways of drawer. r, is the sound vent; rf, the side or block way; 8X, the actuating sliding check block; first check; z5, second check.

Fig. 6, the wedge checkv or play block L; L, L, with mortise LX; u, n, connection link.

Description-T0 enable others to construct and use my improvements, which I term t-he burglar alarm safety drawer; I will describe the same as follows, viz. To any drawer receptacle designed to be made secure, I attach a center socket rail or piece of wood d, CZ, (l, of as small dimensions as possible, so as not to occupy too much space. This rail is bored through, longitudinally, and thus forms a tube, in which is placed va round rod of woodor metal, as small as will afford strength; say about i of an inch if of metal, and if of wood, an inch. This rod is termed the actuating pull rod, and to the end thereof, is iitted an ordinary pull knob o* Figs. l, 3. To the under surface of this actuating pull rod Z), b, Fig. 3, is attached a spring catch c, c, and on the upper surface is a slot catch ci, To the back end is formed a square extension tenon LX, about of an inch more or less, if desired; and into the end thereof is driven or screwed a pointed wire or check pin zf. This actuating pull rod I), passes through the rail d, (l, d, Fig. l, and arranged across the center of the bottom of the drawer, in a direction from front, backward. Next is em-A ployed a transverse dividing rail piece e, e, extending from one side of the drawer to the other, side, right and left. Into this rail is inserted by dovetail tenon, the backward end of the rail d, CZ, ci, while the square end LX of the actuating pull rod Z9, b, passes entirely through the transverse rail e, e, which is attached far enough from the back end of the drawer to admit of sufficient space for the occupancy of any small and suitable clock work, with bell and striker g, g, h, 7L, J. In addition to this first described apartment, another, or a second similar apartment is used, on one or the other sides of the drawer. This second apartment is not however formed within the area of the drawer, but is formed in the drawer casing a, a, a, a, and separated by a partition s, s, s, s, formed with slide grooves or ways, as is usual in an ordinary drawer. This partition is shown detached in Fig. 5, and has each end slotted as at r rt', 1' being the sound escape slot, and r* the slide place or the way of the actuating or sliding block sx. This block has inserted in its side two pins t', about l@ of an inch long, and about lg of an inch thick, more or less, if desired. Attached to the dividing rail e, e is a small block K, with a piece cut out slightly sloping as in Fig. 1. To the square end bx of the actuating pull rod b, b, Fig. 3, is attached by mortise Lx a block L L, Fig. l, and more fully shown in Fig. 6. This block L, Fig. 6, may be termed a stop, or a kind of check block, and has a portion L, cut out slopingly so as to it to the cut Kx, of the blocky K. Into the dividing rail e, e, is attached or inserted in any proper manner a small suitable spring m, m, Fig. 1. Attached to the top of the stop, or check block L, is a link connection n, n, communicating with and connected to a lateral hooked spring 0, 0, 0, 0, Fig. 5, as indi cated in red ink Fig. l. This lateral spring is attached to the side of the drawer, as shown in Fig. l. To the front of t-he drawer ax, and around the actuating pull rod b, b, b, is used a ratch check disk bx, Figs. 1 and t, and a check pin b is used, to hold the ratch disk. This ratch disk is formed with a tube, and has a slot in its end, as at 0*, Fig. 4, and into this slot, fits the stop *'0x, Figs. l, 3. To the side of the drawer, on the upper edge thereof is also a stop peg t, and a corresponding stop u, inserted in the partition s, s, s, s. The inside of the drawer framing a, a, a, (toward the front end thereof,) is formed with two parallel grooves ik into which are inserted flat or round springs; the flat kind being best; and to these springs in the grooves i i is attached a Strip of wood x x the same thickness, and height of the drawer front. This strip x, x, is made to t up neatly to the end of the side of the drawer. In the secret chambers, are arranged clock work devices, and an alarm or bell is screwed on to the side of the drawer, as at J, &, &, &, Fig. l.

The operation of the safety drawer is as follows., In Fig. l, the drawer is pushed into its case, and is secured without the aid of a lock, by the stop t, and the stop u, resting on or bearing against each other, and the hook part 0 x of the spring catch o, o, 0

passing into the partition s, s, s, s, of thev casing a, a, a, and in addition thereto the secret spring slip m presses up against the side of the drawer, and thereby keeps the two stops t and u locked against each other; and before this drawer can be opened, the pull knob bx of the rod b, b, b, Fig. 3, must be turned to the left in the direction of the arrow. This turns the block L which actuates the links n, n, which draws out the hook o w of the spring 0, 0, o, and in the act of doing this the drawer must be also pressed to the left by the pull; and in the act of pressing to the left, hold on to the knob, and withdrawing the drawer, no alarm is given, when operated by any one familiar with the devices.

The knob bx if pulled out directly, will in the act of passing outward, cause the stop pin la* to pass from off the hammer handle 7L, z, and this lets fly t-he spring i, which sets the clock work going, and the hammer or striker h, h, strikes rapidly against the alarm or bell J. Again, if the knob bx is thus pulled out, the spring catch C, catches nconto the outside of the drawer, and the alarm can not be stopped until the spring is again pushed into its place, and the knob pushed back also.

In order to increase the certainty of detection, the side alarm is inserted in the side of the casing instead of within the drawer, and in the act of depredation, as the drawer is being drawn out, the hook 0 a: carries along with it the sliding block sx, by the hook catching the pin t', and as this is done, the stop y, is taken off the hammer axle x, when the side alarm is set going. This side alarm can not be checked until the knob bx, bx, is turned to the left and pulled out, so as to pass the second stop t, Fig. 5, and after passing, turn the knob bx, bx, to the right, which causes the hook o m, to bear against the pin t', when push in the drawer, which will also push back the sliding block sx, and after the drawer is in, then turn the knob bx, to the left, which will relieve the hook 0 m from the pins t, t', when the hook o will be back of the pin check t', ready to draw out the sliding block sx, in case of any depredation. When the alarms are set off, they will continue for several minutes, and after the clock work has run down, it can be again wound up by the key g. For the side alarm, the winding aperture, or key hole, is on the outside of the casing, and for the `drawer alarm, the winding up is done through the rail e, e, at the key hole, where the key g is shown in Fig. 1.

The alarms are so combined, that one or the other, or both can be actuated or set in motion, by one common pull knob b". If the end alarm only is to be used, the ratch disk bx is turned so as to bring the slot c* of the tube, in position to take in the check or catch oix, which prevents the lmob b* b* from being turned, and in addition thereto the hooked spring 0 m 0, 0, o is taken off, and the links 'n n also detached.

Having given a full, clear, and eXact description of my improved burglar alarm safety drawer, what I claim as new and original with myself, and desire to secure by Letters Patent of the United States, is as follows.

Disclaiming the clock devices, and bells,

I claimthrough all of which in combination with Constructing an alarm with an actuating clock Work devices, are actuated bells 0r 10 pull knob, b, ZJ* having a catch spring c, alarms J, &, &, &, substantially in the manrateh disk bx, formed With a tube cx-toner described, and for the purpose set forth.

5 gether With the rail (Z, (Z, (l, Figs. 3, 4, the SAMUEL HAMILTON. [11. 5,]

blocks K, KX, L, links n, fn, hook spring lVtnessesz, 0 o, 0, sliding block sx, with catch de- JNO. S. GALLAHER,

Vices t t the secret s rino' stri X X JOI-IN S. GALLAHER Jr. 

